HELLER, Michał. Karta z historii kosmologii. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 49, p. 194–196, 2011. DOI: 10.59203/zfn.49.128. Disponível em: https://www.zfn.edu.pl/index.php/zfn/article/view/128. Acesso em: 26 nov. 2025.